39. Generally speaking, if according to the instructions, the electric-bike is not dangerous as reported.
A. riding B. ridden C. to ride D. to be ridden
38. The factory has produced it did last year.
A. twice more cars as B. twice as many cars as
C. twice as much cars as D. as twice many cars as
37. It was in America, therefore, the great advances in nineteenth-century agricultural machinery first came.
A. where B. when C. that D. in which
36. Time spent on a beautiful beach can be very enjoyable you go for a holiday for a visit to your friends.
A. if B. when C. no matter D. whether
35. It is interesting to observe common words have found their way into the language from the names of people.
A. how much B. how soon C. how many D. how long
34. Any habit slows down your silent reading to the speed at which you speak, or read aloud, is inefficient.
A. which B. that C. / D. who
33. The amount of rain and snow falls a great difference to the climate.
A. make B. and making C. to make D. makes
32. It was announced that only when the fire was under control to return to their homes.
A. the residents would be permitted B. had the residents been permitted
C. would the residents be permitted D. the residents had been permitted
31. Something has to be done to stop our rivers from being polluted, ?
A. doesn’t it B. hasn’t it C. does it D. haven’t they
30. Water will continue to be it is today – next in importance to oxygen.
A. how B. which C. as D. what
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